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Finding the Fourth Proportional to 126,498.73, 189,775.43 and 47,612.73

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Solution

The fourth proportional to 126,498.73, 189,775.43 and 47,612.73 is: 71,429.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,498.73 : 189,775.43 = 47,612.73 : x
  2. Step 2: Convert to fraction form
    126,498.73/189,775.43 = 47,612.73/x
  3. Step 3: Cross multiply
    126,498.73x = 189,775.43 × 47,612.73
  4. Step 4: Simplify right side
    126,498.73x = 9,035,726,309.22
  5. Step 5: Solve for x
    x = 9,035,726,309.22/126,498.73
  6. Step 6: Final answer
    x = 71,429.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.